Comment by 9rx

It's not just the definition I use, it is the most common definition people use according to the records we keep.

And yes, someone who builds a system to generate Twitter content or maintains a coffee machine are definitely engineers.

Professional engineering societies don't like that fact and often try to usurp the term for their own financial gain, but that's not how English works. Definitions derive from use, not what a small group of people wish were so, and the record that keeps track of use is abundantly clear how the word is most commonly used.